22
★
= ROM default setting. Text in ( ) = display text. Figures in [ ] are used when communicating with the bus.
Programming
VLT
®
Series 2000
Group 2 -- References and Limits
200 Frequency Range (FREQUE RANGE)
Value:
★
0 to 120 Hz
[0]
0 to 500 Hz
[1]
Function:
Using this parameter you can set and thus limit the output
frequency range of the VLT adjustable frequency drive.
Description:
In most cases you can use 0-120 Hz.
WARNING: Only choose 0-500 Hz if you use
special motors designed for high speeds.
201 Minimum Frequency (MIN FREQUE)
Value:
0.0 to f
MAX
★
0
Function:
Choose the minimum frequency that corresponds to the
minimum speed at which the motor is to run. The minimum
frequency can never be higher than the maximum
frequency, f
MAX
.
Description:
A value from 0.0 Hz to the max. frequency (f
MAX
) selected in
parameter 202 can be chosen. This is also chosen in Quick
Set Up Menu step 5.
202 Maximum Frequency (MAX FREQUE)
Value:
0.0 - value in para. 200
★
60 Hz
Function:
Choose a maximum frequency that corresponds to the
maximum speed at which the motor is to run. The maximum
frequency can never be lower than the minimum frequency,
f
MIN
.
Description:
A value from f
MIN
to the value selected in parameter 200 for
f
MAX
(
120 Hz or 500 Hz) This is also chosen in Quick Set
Up Menu step 6.
When the PI controller is active the maximum
frequency can be exceeded by 10%. The same
applies when slip compensation is active.
∆
!
203 Jog Frequency (JOG FREQUE)
Value:
0.0 to f
MAX
★
10 Hz
Function:
The jog frequency is the fixed output frequency at which the
drive runs when the jog function is activated.
Description:
The jog frequency can be selected to be lower than f
MIN
(parameter 201) but the highest output frequency is limited
by f
MAX
(parameter 202).
204 Digital Reference Type (DIG. REF.)
Value:
★
Sum (SUM)
[0]
Relative (RELATIVE)
[1]
Function:
The digital references are generated internally in the unit
and presented as a percentage of the difference between
the f
MAX
and f
MIN
selected in parameters 201 and 202, added
to f
MIN
.
Description:
If
Sum is selected, one of the digital references (parameters
205-208) is added as a percentage of the difference
between f
MAX
and f
MIN
with the other references. If
Relative
is selected, one of the digital references )parameters 205-
208) is added as a percentage of the sum of the other
references.
205 Digital Reference 1 (REF. 1 DIG)
Value:
-100.00% to +100.00%
★
0 % of f
MAX .
- f
MIN
206 Digital Reference 2 (REF. 2 DIGI)
Value:
-100.00% - +100.00%
★
0 % of f
MAX .
- f
MIN
207 Digital Reference 3 (REF. 3 DIG)
Value:
-100.00% - +100.00%
★
0 % of f
MAX.
- f
MIN
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